C0718
DTC C0718
Circuit Description
The air suspension compressor 2 has a temperature sensor. The overtemperature sensor is a thermal limit switch that is in the normally closed position. This provides a ground signal to the air suspension module. The air suspension module monitors the temperature sensor for a compressor overtemperature condition. On receipt of a compressor overtemperature condition the air suspension module switches off the compressor relay. The relay cannot be switched on again until at least 3 minutes after removal of the overtemperature condition.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC C0718 Level Control Compressor 2 Overtemperature
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
Air suspension module senses a compressor 2 overtemperature condition.
Action Taken When the DTC Sets
* Air suspension functionality is suspended.
* SERVICE AIR SUSPENSION message is displayed.
Conditions for Clearing the DTC
The DTC will clear when the condition for setting the DTC is removed.
Diagnostic Aids
* This DTC is set when the compressor has run so long that it has overheated.
* The compressor has overheated because of a blockage in the air system.
* Bad compressor motor ground will set the DTC.
Test Description
The numbers below refer to the step numbers on the diagnostic table.
3. Tests whether the condition is module, system, or condition related.
4. Tests for a short to voltage in the compressor battery positive voltage circuit or a defective air suspension relay.
6. Tests if the DTC sets during normal operating conditions.
